Disable SendsAndReceivesH264 on Memcheck.

Test runs too slowly to complete.

BUG=webrtc:5893
R=tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1977223002 .

Cr-Commit-Position: refs/heads/master@{#12748}
diff --git a/tools/valgrind-webrtc/gtest_exclude/video_engine_tests.gtest-memcheck.txt b/tools/valgrind-webrtc/gtest_exclude/video_engine_tests.gtest-memcheck.txt
index 718b4e0..96a0c5f 100644
--- a/tools/valgrind-webrtc/gtest_exclude/video_engine_tests.gtest-memcheck.txt
+++ b/tools/valgrind-webrtc/gtest_exclude/video_engine_tests.gtest-memcheck.txt
@@ -1,5 +1,6 @@
 # Fails when run under memcheck
 EndToEndTest.CanSwitchToUseAllSsrcs
+EndToEndTest.SendsAndReceivesH264
 EndToEndTest.SendsAndReceivesVP9
 VideoSendStreamTest.VP9FlexMode
 # Times out due to using a real VP8 encoder.